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<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    // 下面第几行代码有错误？ 问题是什么？
        // const num = 10
        // function getSum() {
        //   const count = 10
        //   console.log(num)
        // }
        // console.log(count)


        const num = 10
        function getSum() {
          const count = 10
          console.log(num)
          return count
        }
        console.log(getSum())
  </script>
</body>
</html>